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Vishay General Semiconductor - Diodes Division BZW04P19B-E3/73
- Part No.:
- BZW04P19B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P19B-E3/73.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,132
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Product details
Overview
BZW04P19B-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 13.0 A peak pulse current, and 400 W peak pulse power capability with a 10/1000 μs waveform. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial systems.
For engineers reviewing the BZW04P19B-E3/73 datasheet, BZW04P19B-E3/73 pinout, BZW04P19B-E3/73 application, or BZW04P19B-E3/73 equivalent, key selection criteria include its bi-directional clamping behavior, DO-204AL (DO-41) package compatibility, 175 °C junction temperature rating, and compliance with AEC-Q101 for automotive-grade reliability.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling fast response to transients under 1 ns.
The device is rated for 400 W peak pulse power (10/1000 μs), derated linearly above 25 °C ambient per the published thermal curve, and supports repetitive surge events at ≤0.01 % duty cycle. It exhibits a temperature coefficient of breakdown voltage of +0.092 %/°C, ensuring predictable VBR drift across operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 20.9 V / 24.2 V at 1 mA - Confirmed breakdown range ensures reliable turn-on during transients while avoiding false triggering. |
| VC @ IPPM | 30.6 V at 13.0 A - Clamping voltage limits downstream component stress during worst-case 10/1000 μs surge events. |
| PPPM | 400 W - Peak pulse power handling capacity determines survivability against standardized lightning and inductive load surges. |
| TJ max | +175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with 25.4 mm minimum lead length; compatible with legacy PCB layouts and wave soldering. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - bi-directional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Both terminals function identically; no fixed anode/cathode - enables single-component protection on AC or floating signal lines. |
| Lead 1 | Connection to protected line | Direct connection point to I/O, power rail, or sensor interface requiring clamping to common reference (e.g., ground or supply). |
| Lead 2 | Connection to reference plane | Typically tied to system ground or power return; completes low-impedance surge shunt path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term stability of breakdown voltage and leakage current under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surge events (4 kV/2 Ω) without degradation when properly mounted. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and board-level reliability testing per JEDEC standards. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive CMOS inputs. |
| RoHS-compliant, matte tin plating | Enables lead-free reflow and wave soldering while meeting JESD201 Class 1A whisker resistance requirements. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bi-directional TVS placed between power rail and chassis ground to clamp positive and negative spikes up to ±100 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤30.6 V, preventing latch-up and permanent damage. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS installed across differential signal pair (e.g., 4–20 mA loop) to suppress EFT bursts. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <1 pF parasitic capacitance at DC bias. |
| Consumer Equipment Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Safeguarding USB-C port VBUS and CC lines in portable chargers against hot-plug induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on input side of buck converter to absorb inrush and cable discharge events. Use Value: Prevents overvoltage propagation to USB PD controller ICs, preserving communication handshake integrity. | Use Scenario: Protecting Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) from lightning-induced surges. IC Role / Device Role / Timing Role: Bi-directional clamping device connected between data pair and ground to divert common-mode transients. Use Value: Sustains 400 W surge energy without parametric shift, ensuring multi-event durability in outdoor telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ19CA | DO-214AA (SMB) surface-mount package; same VWM (19 V) and VC (32.4 V), but lower IPPM (12.3 A) and PPPM (600 W). | Requires PCB redesign for SMT layout; better suited for space-constrained consumer electronics vs. through-hole industrial modules. | Select SMBJ19CA only when board real estate is limited and wave-solder compatibility is not required. |
| P6KE19CA | DO-15 package; identical VWM (19 V) and VC (32.4 V), but lower PPPM (600 W) and higher VF (3.5 V); no AEC-Q101 qualification. | Lacks automotive qualification; suitable for commercial-grade power supplies but not for automotive ECU designs. | Choose P6KE19CA for cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
Compared with BZW04P19B-E3/73, SMBJ19CA offers higher surge power in a smaller footprint but requires SMT assembly, while P6KE19CA provides similar electrical specs at lower cost but lacks automotive qualification and has inferior thermal performance in through-hole mounting.
Availability
BZW04P19B-E3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom infrastructure requiring stable component supply with AEC-Q101 validation and long-lifecycle support.
Supply support for BZW04P19B-E3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability and automotive-grade qualification.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive power systems and industrial control cabinets.
FAQ
What is the clamping voltage of BZW04P19B-E3/73 under a 10/1000 μs surge?
The BZW04P19B-E3/73 has a maximum clamping voltage (VC) of 30.6 V at 13.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The BZW04P19B-E3/73 maintains this clamping performance bidirectionally and across its full operating temperature range.
Is BZW04P19B-E3/73 suitable for automotive applications?
Yes, BZW04P19B-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its 175 °C maximum junction temperature, glass-passivated junction, and validated reliability testing per JEDEC standards confirm suitability for under-hood and chassis-mounted applications. The BZW04P19B-E3/73 meets automotive-grade requirements for thermal cycling, mechanical shock, and long-term parametric stability.
What does the "B" suffix in BZW04P19B-E3/73 indicate?
The "B" suffix in BZW04P19B-E3/73 denotes bi-directional functionality - meaning the device provides symmetrical transient suppression in both forward and reverse polarities. Unlike uni-directional variants (e.g., BZW04P19-E3/73), the BZW04P19B-E3/73 has no polarity marking and can be installed without regard to anode/cathode orientation. This makes the BZW04P19B-E3/73 ideal for AC-coupled lines, floating references, and differential signal protection.
What is the standoff voltage (VWM) and how does it relate to system design?
The standoff voltage (VWM) of BZW04P19B-E3/73 is 18.8 V - the maximum continuous DC or RMS voltage the device can withstand without entering breakdown. In system design, VWM must exceed the normal operating voltage of the protected line (e.g., 12 V automotive bus or 24 V industrial supply) with sufficient margin to avoid leakage or premature conduction. For the BZW04P19B-E3/73, this 18.8 V rating allows safe operation on nominal 12–16 V rails while retaining headroom for ripple and tolerance.
Does BZW04P19B-E3/73 require heatsinking in typical applications?
No, BZW04P19B-E3/73 does not require external heatsinking for single-event transient suppression due to its pulsed nature and low average power dissipation (PD = 1.5 W). Its DO-204AL package is designed for adequate thermal dissipation during short-duration surges. However, in high-duty-cycle or repetitive surge scenarios, PCB copper area and lead length become critical thermal paths - the BZW04P19B-E3/73 benefits from ≥25.4 mm lead length and ≥100 mm² copper pour per lead to maintain TJ ≤175 °C.
BZW04P19B-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 13A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P19B-E3/73 FAQ
1.How can I place an order for BZW04P19B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P19B-E3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW04P19B-E3/73 reliable?
The price and inventory of BZW04P19B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P19B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P19B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P19B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P19B-E3/73?
BZW04P19B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P19B-E3/73 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW04P19B-E3/73?
For technical support, including BZW04P19B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P19B-E3/73 requirements.
6.How does Aetrix verify that BZW04P19B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P19B-E3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW04P19B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P19B-E3/73?
All BZW04P19B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P19B-E3/73, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW04P19B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P19B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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